Unsharp Mask and LAB L channel

[Snapshot]

I stumbled across this website that promotes the idea of doing your sharpening only on the L channel in LAB mode - Sharpening in LAB Color - Photo.net - Articles

When using Unsharp Mask, I've always set the Blend Mode to Luminosity, is this essentially the same thing? It seems a lot simpler.

[firstdefence]

Luminosity and LAB Lightness are different beasts but essentially produce the same result so do whichever is easiest... Work smarter not harder 😉

This post on DPReview highlights the indifference: https://www.dpreview.com/forums/thread/558351 

[Old Bruce]

6 hours ago, firstdefence said:

Work smarter not harder

I worked with a fellow who said I reminded him of his father's favourite saying "Use your brain, not your back".

[j3rry]

I use my own 1-2-3-L recipe for sharpening with great success. 
Radius 1, amount 2,threshold 3 and level mode "luminosity". This is my starting point and with a zoom level of 100-200% I fine tune it to suppress artefacts.
 

[Snapshot]

Thank you for your responses, I will work smarter, not harder.